Magnetic excitations in heavy electron state of filled skutterudite Pr xLa1-xFe4P12 (x = 1.00 and 0.85)

Kazuaki Iwasa; Lijie Hao; Tomoo Hasegawa; Kenji Horiuchi; Youichi Murakami; Junya Otsuki; Yoshio Kuramoto; Masahumi Kohgi; Keitaro Kuwahara; Hitoshi Sugawara; Yuji Aoki; Hideyuki Sato

doi:10.1143/JPSJ.77.063706

Magnetic excitations in heavy electron state of filled skutterudite Pr _xLa_1-xFe₄P₁₂ (x = 1.00 and 0.85)

Kazuaki Iwasa, Lijie Hao, Tomoo Hasegawa, Kenji Horiuchi, Youichi Murakami, Junya Otsuki, Yoshio Kuramoto, Masahumi Kohgi, Keitaro Kuwahara, Hitoshi Sugawara, Yuji Aoki, Hideyuki Sato

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

PrFe₄P₁₂ exhibits clear heavy electron behaviors as well as the phase transition to an antiferro-type ordering of 4f electron state. In this paper, we report on inelastic neutron scattering results for powdered samples of Pr_xLa_1-xFe₄P₁₂ (x = 1.00 and 0.85). A clear quasielastic magnetic response is observed, and no distinct signal is seen for crystal-field (CF) excitations in the heavy electron state. A model with strong hybridization between conduction electrons and Pr ³⁺ 4f² electrons [J. Otsuki et al.: J. Phys. Soc. Jpn. 74 (2005) 200 and 2082] is consistent with the observed magnetic response. This result shows that the heavy electron behavior of Pr_xLa _1-xFe₄P₁₂ (x = 1.00 and 0.85) originates from the Kondo effect associated with low-lying singlet-triplet CF states.

Original language	English
Article number	063706
Journal	journal of the physical society of japan
Volume	77
Issue number	6
DOIs	https://doi.org/10.1143/JPSJ.77.063706
Publication status	Published - Jun 2008
Externally published	Yes

Keywords

Dynamical magnetic susceptibility
Heavy electron
Neutron scattering
Rare-earth filled skutterudite

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.77.063706

Cite this

@article{b2fc26779ab7498c8819084202bc993b,

title = "Magnetic excitations in heavy electron state of filled skutterudite Pr xLa1-xFe4P12 (x = 1.00 and 0.85)",

abstract = "PrFe4P12 exhibits clear heavy electron behaviors as well as the phase transition to an antiferro-type ordering of 4f electron state. In this paper, we report on inelastic neutron scattering results for powdered samples of PrxLa1-xFe4P12 (x = 1.00 and 0.85). A clear quasielastic magnetic response is observed, and no distinct signal is seen for crystal-field (CF) excitations in the heavy electron state. A model with strong hybridization between conduction electrons and Pr 3+ 4f2 electrons [J. Otsuki et al.: J. Phys. Soc. Jpn. 74 (2005) 200 and 2082] is consistent with the observed magnetic response. This result shows that the heavy electron behavior of PrxLa 1-xFe4P12 (x = 1.00 and 0.85) originates from the Kondo effect associated with low-lying singlet-triplet CF states.",

keywords = "Dynamical magnetic susceptibility, Heavy electron, Neutron scattering, Rare-earth filled skutterudite",

author = "Kazuaki Iwasa and Lijie Hao and Tomoo Hasegawa and Kenji Horiuchi and Youichi Murakami and Junya Otsuki and Yoshio Kuramoto and Masahumi Kohgi and Keitaro Kuwahara and Hitoshi Sugawara and Yuji Aoki and Hideyuki Sato",

year = "2008",

month = jun,

doi = "10.1143/JPSJ.77.063706",

language = "English",

volume = "77",

journal = "journal of the physical society of japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "6",

}

TY - JOUR

T1 - Magnetic excitations in heavy electron state of filled skutterudite Pr xLa1-xFe4P12 (x = 1.00 and 0.85)

AU - Iwasa, Kazuaki

AU - Hao, Lijie

AU - Hasegawa, Tomoo

AU - Horiuchi, Kenji

AU - Murakami, Youichi

AU - Otsuki, Junya

AU - Kuramoto, Yoshio

AU - Kohgi, Masahumi

AU - Kuwahara, Keitaro

AU - Sugawara, Hitoshi

AU - Aoki, Yuji

AU - Sato, Hideyuki

PY - 2008/6

Y1 - 2008/6

N2 - PrFe4P12 exhibits clear heavy electron behaviors as well as the phase transition to an antiferro-type ordering of 4f electron state. In this paper, we report on inelastic neutron scattering results for powdered samples of PrxLa1-xFe4P12 (x = 1.00 and 0.85). A clear quasielastic magnetic response is observed, and no distinct signal is seen for crystal-field (CF) excitations in the heavy electron state. A model with strong hybridization between conduction electrons and Pr 3+ 4f2 electrons [J. Otsuki et al.: J. Phys. Soc. Jpn. 74 (2005) 200 and 2082] is consistent with the observed magnetic response. This result shows that the heavy electron behavior of PrxLa 1-xFe4P12 (x = 1.00 and 0.85) originates from the Kondo effect associated with low-lying singlet-triplet CF states.

AB - PrFe4P12 exhibits clear heavy electron behaviors as well as the phase transition to an antiferro-type ordering of 4f electron state. In this paper, we report on inelastic neutron scattering results for powdered samples of PrxLa1-xFe4P12 (x = 1.00 and 0.85). A clear quasielastic magnetic response is observed, and no distinct signal is seen for crystal-field (CF) excitations in the heavy electron state. A model with strong hybridization between conduction electrons and Pr 3+ 4f2 electrons [J. Otsuki et al.: J. Phys. Soc. Jpn. 74 (2005) 200 and 2082] is consistent with the observed magnetic response. This result shows that the heavy electron behavior of PrxLa 1-xFe4P12 (x = 1.00 and 0.85) originates from the Kondo effect associated with low-lying singlet-triplet CF states.

KW - Dynamical magnetic susceptibility

KW - Heavy electron

KW - Neutron scattering

KW - Rare-earth filled skutterudite

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